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From Harsh J <ha...@cloudera.com>
Subject Re: How to make the setting changes works
Date Wed, 24 Apr 2013 17:22:20 GMT
Did you end up reformatting the NameNode? Thats one reason why DNs will
refuse to work. You need to clear out the dfs.data.dir directories for it
to work again. Note that you shouldn't reformat the NN ever, unless it is
your intention to wipe away all data and begin all over again.

On Wed, Apr 24, 2013 at 7:47 AM, Geelong Yao <geelongyao@gmail.com> wrote:

> Hi
> Sorry to interrupt you.But nobody answer my question in Hadoop maillist.
> I have met a issue after I change the content of hdfs-site.xml to add
> another dfs.data.dir in my cluster. /usr/hadoop/tmp/dfs/data is the default
> value, /sda is the new one
> <property>
>         <name>data.dfs.dir</name>
>         <value>/usr/hadoop/tmp/dfs/data,/sda</value>
>     </property>
> The permission of /sda has been changed.
> [image: 内嵌图片 1]
> First I stop the cluster with stop-all.sh and replace the old
> hdfs-site.xml with new ones,then I restart the cluster with
> start-all.sh,but I found that datanode did not start
> --
> From Good To Great

Harsh J

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